Nano Technology


Published on

Done by Aloysius Zai 3A104

Published in: Education
  • Be the first to comment

No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide

Nano Technology

  1. 1. Nano-Technology<br />Done by Aloysius Zai<br />3A104<br />An Ace Project on…<br />
  2. 2. Overview<br />What is nano-technology?<br />How it started: First evidence of nano-technology<br />Methods to harness nano-technology<br />Uses of nano-technology<br />Picture Gallery<br />Personal inputs on nano-technology<br />Bibliography<br />
  3. 3. What is nano-technology?<br />Nanotechnology is the engineering of functional systems at the molecular scale<br />covers both current work and concepts that are more advanced. <br />‘Nanotechnology' also refers to the projected ability to construct items from the bottom up, using techniques and tools being developed today to make complete, high performance products.<br />
  4. 4. First evidence of nano-technology<br />Evidence from: Physicist Richard Feynman<br />Venue: American Physical Society<br />Event: Speech about this process to manipulate individual molecules and atoms using tools to build a proportionally smaller model of an object.<br />
  5. 5. Methods to harness nano-technology<br />A Bottom up approach DNA Nano-technology<br />[Arranging smaller components to more complex structures]<br />Two ways to harness DNA Nano-tech:<br />1.Tile-based structures<br /> 2.Folding Structures<br />
  6. 6. More about DNA nanotech<br />Tile based Structures<br />Tile-based structures is the idea of creating DNA nano-structures out of smaller, discrete units.<br />
  7. 7. Folding Structures<br />Create 2D DNA structures from a long strand of arbitrary DNA sequence <br />They are then folded into the desired shape of the structure using shorter strands. <br />We can use this method of DNA nano-technology to create 2D “nano-sized” shapes using DNA.<br />
  8. 8. Top-down approaches Nanoelectromechanical Systems<br />To Create smaller devices by using larger ones<br />makes use of the chemical properties of single molecules to cause singular molecular components to self-organise or carry out positional assembly. <br />These two ideas make use of the concept of molecular self-assembly or molecular recognition to create nano-structures.<br />
  9. 9. Uses of nano-technology in our daily life<br />Sunscreens<br />sunscreens contain nanoparticles of zinc oxide or titanium oxide.<br />Older sunscreen formulas use larger particles, which is what gives most sunscreens their white colour.<br />nano particles are less visible  when you rub the sunscreen into your skin, it doesn't give you a whitish colour<br />
  10. 10. Clothing<br />Manufacturers Coat fabrics with a thin layer of zinc oxide nanoparticles<br />Able to create clothes that give better protection from UV radiation.<br />Other clothes have nano particles in the form of minute “hair” or “whiskers”<br />Make clothing stain resistant.<br />
  11. 11. Anti bacterial Bandages<br />Use nano particles of silver in the process of manufacturing the bandage<br />Silver ions block microbes' cellular respiration<br />(Silver smothers harmful cells and killthem)<br />
  12. 12. Tennis<br />Nanotube racket<br />made the racket out of carbon nanotube-infused graphite<br />Racket light but VERY powerful<br />VS Nanotube Power racket<br />
  13. 13. Still on tennis,<br />The Brand “Wilson” coated clay nano particles on the inner core of their tennis ball<br />Clay acts as sealant ∴ Air cannot escape<br />
  14. 14. Picture Gallery<br />Nano-technology in cancer treatment<br />
  15. 15. Nano-machines<br />
  16. 16. Stick man formed from <br />28 carbon monoxide molecules<br />
  17. 17. nano machine to repair red-blood cells <br />
  18. 18. My personal inputs on nano-technology<br />I find that this invention of nano-technology is a great milestone of human inventions and likewise, it is a great milestone for science and technology. Even at this point of time, nano-technology is already harnessed in so many ways so we can imagine that next time, nano-technology will be harnessed in uncountable areas. <br />
  19. 19. (continued)<br />I also find that nano-technology is very useful as we get to build very minute objects such as machines in the medical field such as treating cancer cells et cetera. I believe that the invention of such a technology proves to all of mankind that nothing is impossible with the help of science and technology as we all know that once, people never even bore the slightest thought that creating nano objects was even possible<br />